Coupling.



No 738,729. PAIITENTED SEPT. 8, 190's W; MoCONWAY, Jn.

COUPLING.

APPLIOATION FILED no. 31; 1902 no MODEL.

FIEJ- 1 2 SHEETS-SHEET 11.

WITNESSES: INVENTOR I hw we NoRms PETERS co. PHOYO-LITHO No. 738,729.PATENTED SEPT. 8,1903."

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COUPLING.

APPLIQATION FILED DEC. 31. 1902 no MODEL. mums-sun's.

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ivo. 738,729

U IT D STATES i Fatented September 8, 1903 PATENT OFFICE.

WILLIAM MOCONWAY, 3a., OF PITTSBURG, PENNSYLVANIA, ASSIGNOR To MOCONWAYAND TORLEY COMPANY, OF PITTSBURG, PENNSYLVANIA, A CORPORATION OFPENNSYLVANIA. I

COUPLING.

SPECIFICATION formingpart Of Letters Patent No. 738,729, dated September8, 1903.

Application filed December 31,1902. Serial No. 137,297. (No model.)

To aZZ whom it may concern:

Be it known that I, WILLIAM MOCONWAY, J r., a citizen of the UnitedStates, residing at Pittsburg, in the county of Allegheny and 5 State ofPennsylvania, have invented or discovered certain new and usefulImprovements in Couplers, of which improvements the following is aspecification.

The invention described herein relates to 10 certain improvements incar-couplers of the Master Car-Builders or swinging-hook type,

thereto. Fig. 2 is a sectional elevation on a plane indicated by theline II II, Fig. 1, showing the locking-block in looking position. Fig.3 is a viewsimilar to Fig. 2, showing the locking-block supported inunlocking position where the knuckle is closed; and Fig. 4 is a viewsimilar to Fig. 2, illustrating a modification of the improvement andshowing the parts in position to effect an Opening of the knuckle.

I In the practice of my invention the coupler is of the usual form orconstruction as regards head 1, knuckle 2, and locking-block 3, exceptfeatures hereinafter described. In

a slotformed in the upper wall of the coupler-head is so arranged ablock 4 that the latter may have a lateral movement toward and from thelocking-block and also a rotating movement to effect an opening of theknuckle. To this end a slot 5 is formed in the block for the passage ofa pin 6, which is supported at its ends by the side walls of the slot inthe head. This block is provided with a horn 7,

which when the locking-block is in looking.

position rests against the side of the latter and holds the block 4back, as shown. As

the locking-block is raised to unlocking position the block 4 will dropforward, the horn entering a notch 8, formed in the side of thelocking-block, and by such engagement with the locking-block willsupport the latter in unlocking position, as shownin Fig. 3. On

a further upward movement of the lockingblock a too or projection 9 willengage the horn 7 and cause a rotationof the block 4on its pin, therebyshifting the arm 10 on the block 4 against the rear wall of the tail ofthe knuckle, so that by the further movement of the arm the knuckle willbe shifted to open position, as shown in Fig. 4. A rib 11, havinginclined sides, is so formed on the upper surface of the tail of theknuckle that when the latter is shifted to open position while thelocking-block is supported by the horn 7 the rib, will strike againstthe inclined under edge of the projection 15 on the block 4, and therebyrotating the block and'its arm 10 so that the latter moves off of itssupporting-abut- V ment 13 and the horn 7 and block 4 are forcedbackward by the movement of the inclined upper edge of the horn alongthe upper edge of the notch 8, thereby effecting a partial withdrawal ofthe horn from the notch. When the knuckle has been Opened by the liftingof the locking-block, the several parts will assume the positions shownin Fig. 4. As the knuckle is closed the arm 10 will be forced onto itsabutment, the block rotating on the pin 6. During this rotation orshifting of the movable block 4 the locking-block will rest on theinclined surface a of the horn, preventing any lateral movement forwardinto the notch 8, and as the locking block approaches the upper surfaceof the tail of the knuckle the horn will be turned out of the notch andits point will slide along the 0 side of the locking-block.

By reference to Fig. 2 it will be seen that the arm 10 of the block 4rests upon an abutment 13 and forms a pivotal supportfor the block whenthe latter is in normal or unlock- 5 ing position. This pivotal supportfor the blockis at one side of the center of gravity of the block, sothat the latter'will always have a bias or tendency to drop into lockingposition. Such movement is, however, pre- :00

vented by the locking-block, except when the latter is clear of the tailof the knuckle.

In lieu of forming notch or recess in the side of the locking-block arib 12 may be formed along one edge to holdthe block in the positionshown in Fig. 2 until the latter is in looking position and the toe 9formed on the same side of the locking-block, as shown in Fig. 4.

The block 4 is provided with a finger 14, accessible from outside thecoupler head, whereby the block 4: may be shifted to release the lockingblock or pin without opening the swinging hook or knuckle.

I claimherein as my invention- 1. A car-coupler of theMasterOar-Builders or swinging-hook type, having in combination aswinging hook or knuckle, a locking block or pin, a block looselymounted in the coupler- .head and provided with a horn or projectionadapted to engage and support the lockingpin when in unlocked positionwithout shifting the hook or knuckle, and having an arm adapted toengage and shift the knuckle on a further movement of the block,substantially as set forth.

2. A car-coupler of the Master Oar-Builders orswinging-hook type havingin combination aswinging hook or knuckle, alocking block or pin, amovable block provided with an armhaving a pivotal support and having ahorn or projection adapted to engage and support the locking-block whenin unlocking position without shifting the knuckle from closed position,and to be shifted to release the pin by the closing movement of theknuckle substantially as set forth.

3. A car-coupler of the Master Car-Builders or swinging-hook typehaving-in combination aswinging hook or knuckle, a locking block or pin,a block movably mounted inthe couplerhead and provided with. an armextending back of the tail of the knuckle and having a horn orprojection adapted to engage and support the locking-block in unlockingposition Without shifting the knuckle from closed position and aprojection on the locking-block and adapted to engage the horn orprojection on the movable block to shift the knuckle to open position,substantially as set forth.

4. Acar-coupler of theMaster Oar-Builders type having in combination aswinging hook or knuckle, a locking block or pin, a block movablymounted in the coupler-head provided with a horn or projection adaptedto engage and support the locking block or pin when in unlockingposition, and a projection on-the tail of the knuckle adapted to engagea toe on the movable block and shift the latter when the knuckle isopened, substantially as set forth.

5. A coupler of the Master (Jar-Builders or swinging-hook type having incombination a swinging hook or knuckle, a locking-pin, a block, havingupper and lower pivotal supports about which it successively rotates,and

movable upon its upper pivotal support, and having a horn adapted toengage the lockingpin and support it when in unlocked position withoutshifting the hook or knuckle, and an arm adapted to engage and shift theknuckle on a further movement of the block, substantially as set forth.

6. A car-coupler of the Master Car-Builders or swinging-hook type havingin combination a swinging hook or knuckle, a locking-pin, a movableblock, provided with an arm having a pivotal support on the wall of thecoupler, and a horn adapted to engage and support the locking-pin whenin-unlocked position without shifting the knuckle from closedposition,.and to be shifted to release the locking-pin by the closingmovement of the knuckle substantially as set forth.

7. A car-coupler of the Master Oar-Builders or swinging-hook type havingin combination a swinging hook or knuckle, a locking-pin, a block havingpivotal upper and lower supports about which it successively rotates,and slidable on at its upper pivotal support and provided with an armextending back of the tail of the knuckle and a horn adapted toengagethe locking-pin and support it when in unlocked position withoutshifting the knuckle from closed position, and a hook projection on thelocking-pin adapted to engage the horn of the trigger to shift theknuckle to open position, substantially as set forth. f

8. Acar-coupler of the Master Car-Builders or swinging-hook type havingin combination a swinging hook or knuckle, a locking-pin, a block havingupper and lower pivotal supports aboutwhich itsuccessively rotates, andslidable on its upper pivotal support and adapted to engage and supportthe lockingpin when in unlocking position, and a projection on the tailof the knuckle adapted to engage a finger on the block and shiftthelatter when the knuckle is opened, substantially as set forth.

In testimony whereof I have hereunto set my hand.

WILLIAM McooNWAY, JR.

Witnesses:

GEO. W. McCANnLEss, JAMES L. SHEW.

